diff --git a/libs/langgraph/langgraph/utils/cache.py b/libs/langgraph/langgraph/utils/cache.py
index 01ee2b2ea..5555cf9bc 100644
--- a/libs/langgraph/langgraph/utils/cache.py
+++ b/libs/langgraph/langgraph/utils/cache.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from collections.abc import Hashable
 from typing import Any